TABLE 1.

Population and subpopulation chloroquine IC₅₀ results

D6:W2 ratio	Chloroquine IC50 (ng/ml) fora:
	Total population	D6 subpopulation	W2 subpopulation
100:0	9.1
90:10	8.3	5.9	DNCb
75:25	10.0	3.3	211.5
50:50	30.0	6.4	244.4
25:75	80.4*	5.9	278.5
10:90	198.1*	DNCb	220.1
0:100	210.3*

^aData are averages from four to six experiments. *, value is statistically significantly different (P < 0.05) from D6:W2 (100:0).

^bDNC, did not converge (for the subpopulation IC₅₀ determination).